SU(3) structures on S2 bundles over four-manifolds

We construct globally-defined $SU(3)$ structures on smooth compact toric varieties (SCTV) in the class of ${\mathbb{C}\mathbb{P}}^1$ bundles over $M$, where $M$ is an arbitrary SCTV of complex dimension two. The construction can be extended to the case where the base is K"ahler-Einstein of positive curvature, but not necessarily toric, and admits a parameter space which includes $SU(3)$ structures of LT type.